Class 2 (2nd Engineer) MEKG 📅 Jan 2021

Exam Question

With regard to care of lubricating oils onboard, answer the following

(a) Microbial degradation of lubricating oil and measures to prevent the same

(b) Methods of ensuring correct sampling is done for the purpose of shore based testing

(c) If the shore based testing results show an abnormal values of water content and TBN for the crank case lub oil of a slow speed main engine, what will be the interpretation and subsequent action?

Reference Answer

(a) Microbial degradation of lubricating oil occurs when microorganisms, such as bacteria, yeast, molds, and sulfate-reducing bacteria (SRB), proliferate and decompose the lubricant, making it unsuitable for use. These microorganisms can be either aerobic or anaerobic.
Conditions that Promote Microbial Growth:
Presence of water
Availability of nutrients

Full answer on MeoMock — surveyor-grade reference answers for 7,000+ written exam questions.

View plans Browse library

← Browse more questions

Prepare on Android — MeoMock on Google Play